Question

Which method is most likely used to identify what happened before the start of the Paleozoic era?
Scientists study fossils from the Jurassic period.
Scientists observe index fossil records of the Mesozoic era.
Scientists examine fossil evidence during the Precambrian time.
Scientists explore the emergence of mammals and humans in the Cenozoic era.

Answer 1

Answer:  Researching about things at the Precambrian time might help them to identify what would have happened before Paleozoic era. Option D states that, 'Scientists explore the emergence of mammals and humans in the Cenozoic era

Explanation:

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